Inelastic light scattering study of hydrogen-bonded glass formers: Glycerol and ethanol

V. A. Zykova; N. V. Surovtsev

doi:10.1016/j.jnoncrysol.2017.06.036

Inelastic light scattering study of hydrogen-bonded glass formers: Glycerol and ethanol

V. A. Zykova, N. V. Surovtsev

Результат исследования: Научные публикации в периодических изданиях › статья

1 Цитирования (Scopus)

Аннотация

Temperature dependences of the structural relaxation time τ_α(T) of two hydrogen-bonded glass formers, glycerol and ethanol, were investigated by depolarized light scattering technique. τ_α(T) of glycerol demonstrates a transition from the Arrhenius law at high temperatures to a non-Arrhenius behavior at T_A ~ 366 K. Combination of derivative analysis results for τ_α(T) from light scattering and dielectric spectroscopes reveals this transition near ~ 200 K in the case of ethanol. The obtained values of T_A are close to the temperatures below which the excess of the Landau-Placzek ratio, associated with the appearance of locally favored structures, was observed earlier.

Язык оригинала	английский
Страницы (с-по)	429-434
Число страниц	6
Журнал	Journal of Non-Crystalline Solids
Том	471
DOI	https://doi.org/10.1016/j.jnoncrysol.2017.06.036
Состояние	Опубликовано - 1 сен 2017

Доступ к документу

10.1016/j.jnoncrysol.2017.06.036

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Цитировать

Zykova, V. A., & Surovtsev, N. V. (2017). Inelastic light scattering study of hydrogen-bonded glass formers: Glycerol and ethanol. Journal of Non-Crystalline Solids, 471, 429-434. https://doi.org/10.1016/j.jnoncrysol.2017.06.036

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title = "Inelastic light scattering study of hydrogen-bonded glass formers: Glycerol and ethanol",

abstract = "Temperature dependences of the structural relaxation time τα(T) of two hydrogen-bonded glass formers, glycerol and ethanol, were investigated by depolarized light scattering technique. τα(T) of glycerol demonstrates a transition from the Arrhenius law at high temperatures to a non-Arrhenius behavior at TA ~ 366 K. Combination of derivative analysis results for τα(T) from light scattering and dielectric spectroscopes reveals this transition near ~ 200 K in the case of ethanol. The obtained values of TA are close to the temperatures below which the excess of the Landau-Placzek ratio, associated with the appearance of locally favored structures, was observed earlier.",

keywords = "Alpha relaxation, Fragile behavior, Glass-forming liquids, Raman scattering, STRUCTURAL GLASS, FORMING LIQUIDS, ALPHA-RELAXATION, VISCOSITY, DIELECTRIC-SPECTROSCOPY, HETEROGENEOUS DYNAMICS, SUPERCOOLED LIQUIDS, TRANSITION, BETA-RELAXATION, MONOHYDROXY ALCOHOLS",

author = "Zykova, {V. A.} and Surovtsev, {N. V.}",

year = "2017",

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doi = "10.1016/j.jnoncrysol.2017.06.036",

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T1 - Inelastic light scattering study of hydrogen-bonded glass formers

T2 - Glycerol and ethanol

AU - Zykova, V. A.

AU - Surovtsev, N. V.

PY - 2017/9/1

Y1 - 2017/9/1

N2 - Temperature dependences of the structural relaxation time τα(T) of two hydrogen-bonded glass formers, glycerol and ethanol, were investigated by depolarized light scattering technique. τα(T) of glycerol demonstrates a transition from the Arrhenius law at high temperatures to a non-Arrhenius behavior at TA ~ 366 K. Combination of derivative analysis results for τα(T) from light scattering and dielectric spectroscopes reveals this transition near ~ 200 K in the case of ethanol. The obtained values of TA are close to the temperatures below which the excess of the Landau-Placzek ratio, associated with the appearance of locally favored structures, was observed earlier.

AB - Temperature dependences of the structural relaxation time τα(T) of two hydrogen-bonded glass formers, glycerol and ethanol, were investigated by depolarized light scattering technique. τα(T) of glycerol demonstrates a transition from the Arrhenius law at high temperatures to a non-Arrhenius behavior at TA ~ 366 K. Combination of derivative analysis results for τα(T) from light scattering and dielectric spectroscopes reveals this transition near ~ 200 K in the case of ethanol. The obtained values of TA are close to the temperatures below which the excess of the Landau-Placzek ratio, associated with the appearance of locally favored structures, was observed earlier.

KW - Alpha relaxation

KW - Fragile behavior

KW - Glass-forming liquids

KW - Raman scattering

KW - STRUCTURAL GLASS

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KW - ALPHA-RELAXATION

KW - VISCOSITY

KW - DIELECTRIC-SPECTROSCOPY

KW - HETEROGENEOUS DYNAMICS

KW - SUPERCOOLED LIQUIDS

KW - TRANSITION

KW - BETA-RELAXATION

KW - MONOHYDROXY ALCOHOLS

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JO - Journal of Non-Crystalline Solids

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